Spring-manufacturing machine.



E. J. HARVEY.

SPRING MANUFACTURING MACHINE.

APPLICATION FILED APB.12, 1913. 1,1 1 3,987. Patented 001:. 20, 1914.

6 SHEETS-SHEET 1.

Fllllnllll Ill B. J. HARVEY.

SPRING MANUFACTURING MACHINE.

APPLICATION FILED APR. 12, 1913. 1 1 1 3,987. Patented 00a 20, 1914 58HBE'18BHEE'I 2.

ewumm 6M f E. J. HARVEY. SPRING MANUFAGTURING MACHINE.

1,1 1 3,987. Patented 0011.20, 1914 6 s1; BIB-sums,

B. J. HARVEY. SPRING MANUFACTURING MACHINE.

APPLIGATION FILED APR.12,1913.

Patented Oct. 20, 1914.

5 SHEETS-SHEET 4.

E. J. HARVEY. SPRING MANUFACTURING momma. APPLICATION FILED APRJZ, 1913.

Patented Oct. 20, 1914,

5 SHEETS SHEET 5.

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mii' mulllllgggg lvikmaooeo iz m7 K W M1 (id/(NM q UNITED STATES PATENTOFFICE.

EDWARD J'. HARVEY, OF RACIN'E, WISCONSIN, ASSIGNOR TO HARVEY SPRING ccFORGING COMPANY, OF RACINE, WISCONSIN, A CORPORATION OF WISCONSIN.

SPRING-MANUFACTURING MACHINE.

Specification of Letters Patent.

Patented Oct. 20, 1914.

Application filed April 12, 1913. Serial No. 760,571.

To all whom it may concern Be it known that I, EDWARD J. HARVEY, acitizen of the United States, residing at Racine, county of Racine, andState of Wisconsin, have invented new and useful Improvements inSpring-Manufacturing Machines, of which the following is aspecification.

My invention relates to improvements in machines for manufacturingvarious styles and shapes of springs for automobiles and other vehicles.Experience has proven that springs, as heretofore constructed, sometimeswarp and get out of shape while being tempered, when, additional laboris required to restore them to their proper shape after having beentempered.

The object of my invention is, among other things, 1st, to provide adevice for retainin' the springs in their forming clamps while eingtempered and cooled, whereby it is practically impossible for suchsprings to become warped while being tempered, and 2nd,. to provide adevice whereby one set of springs may be submerged in oil and temperedwhile another set is being put in place and clamped into the requiredshape preparatory to being submerged and tempered, whereby the work offorming and tempering the springs, as compared. with previous methods,is not only greatly accelerated, but the contour of the springs thusproduced is more perfect.

My invention is further explained by reference to the accompanyingdrawings, in which Figure 1 is a plan view thereof; Fig. 2 is an endview; Fig. 3 is a side view; Fig. 4 is a plan of a part of the drivingmechanism and the clutch mechanism, a part of the clutch mechanism beingbroken away to show the interior construction; Fig. 5 is an end View ofa part of the mechanism shown in Fig. 4; Fig. 6 is a side view of theautomatic device for operating the clutch shown on the left handside ofFig. 4; Fig. 7 is a plan View, and Fig. 8 is a vertical section of theclamping mechanism supported on the respectiveends of the oscillatingplatform. Like parts are represented by the same ref erence numeralsthroughout the several views.

1 is a platform upon the respective ends are formed and held in thedesired shape while being submerged in oil and tempered.

2, 2 are standards from which the platform is. pivotally supported byand upon the shaft 3.

4 is an oil tank, which is nearly filled with oil 6.

While other motive power may, if desired, be employed, I preferablyoperate my machine With an electric motor of ordinary construction.

Motion is communicated from the motor 5 to the movable spring-holdingclamping members 10 through the shaft 7, pinion 8, gear wheel 9, shaft3, pinion 20, gear wheel 21, clutch 22, shaft 3, eccentric cams 11,cam-inclosing collars 12, arms 13, and pivotal bolts 14:, operating inapertures provided therefor in the lugs 15. It will be understood thatthe lugs 15 are formed integral with or rigidly connected to the movableclamping members 10, and that said movable members 10 are caused to movetoward and from the opposin stationary clamping members 16 with c2151revolution of said eccentric cam 11. The movable clamping members 10 andthe stationary clamping members 16 are each provided with a series ofadjustable bearing blocks 18 and 19, which blocks are adapted to bemanually adjusted to conform to any shape -of spring which the operatordesires .to manufacture, so that, when once adjusted, all springs formedby said clamping devices will be given the same desired shape, e. 9.assuming that the series of blocks 18 and 19 have been adjusted toconform to the desired shape of spring, a plate of steel, which haspreviously been heated to the required temperature, is placed betweensaid opposing series of forming blocks, and the movable clamping members10, when elevated, are automatically forced as hereinafter describedtoward the stationary members, whereby the heated plate of steel iscompressed into the desired shape by said forming blocks, while theseries of forming blocks upon the opposite end of said platform issimultaneously withdrawn from the sub merged plate, when,-by the furthermovement of the motor, the heated spring is submerged in oil, and thetempered spring is brought above the surface of the oil prepara tory tobeing removed. Thus it is'obvious that, with each revolution of saideccentric cams 11, one spring is clamped and formed while the springpreviously clamped is released.

The oscillatory movement of the platform 7 is communicated to it fromthe motor 5 through the shaft 7, pinion 8, gear wheel 9,-

cam 26, said platform 1 is caused to oscillate upwardly and downwardlyas described.

27' is a fly wheel, which is rigidly supported from the shaft 3.

The adjustable forming blocks 18 are respectively provided with a rod28, which rod has slidable hearings in the apertures 29 in the movableclamping members 10, and said blocks 18 are adapted to be adjusted toconform to the shape of the spring to be made, upon said rod 28 by firstreleasing the set screws 30, When said set crews havebeen released, thesaid blocks 18 are adjusted to conform to the shape of the spring to bemanufactured, and when the proper adjustment has been made, said setscrews are turned back in their bearings against said rods, whereby theyare adapted, when forced against the heated spring, to communicate to itthe required shape. The several blocks of the respective series 18,together with their supporting rods 28, are yieldingly supported fromsaid clamping. members 10 by the spiral springs 31, which springs areinterposed between the bar 10' of sa1d clamping member 10, and thetransverse pins 32, which pins 32 are carried by said rods 28. Thus itis obvious that each block of the series 18 has a slight movementindependent of the others, as may be required to conform to slightirregularities of'the surface of the spring which is being formed: Theseveral blocks;

of the res ective series 19 are adjustably supported etween the upperplate 34 and the lower plate 35 of the clamping member 16 upon the rods36, which rods hear at their outer ends against the stationary bar 37,and are adjustably supported in apertures provided therefor in saidblocks by the clamping screws 38. Thus it is obvious that, whenadjusting the series of blocks 19, to conform to the shape .of thespring which it is desirous to make, the set screws are turned back intheir bearings when said blocks 19 are readily moved forwardly orbackwardly upon the rods 36, and when'the desired adjustment has beenmade, said set screws are turned forward in their bearings against saidrods, whereby the blocks of said series 19 are rigidly retained at thedesired points of adjustment.

It will, of course, be understood that,

tempering and placed between the forming while the motor is runningcontinuously the oscillating platform 1 is operated intermittin 1y as itis necessary that it should remain at rest while one set of springs isbeing tempered and one set of springs is being put in place between theclampingmembers of the machine. To accomplish this object, the gearwheel 21-is adapted to 'revolve freely upon its supporting shaft 3without communicating motion to said shaft. When, however, the metaltobe formed into springs has been securely clamped between the clampingmembers, as prevlously described, the initial motion is communicatedfrom the revolving gear wheel 21 to its supporting shaft 3 by the manualact of the operator as hereinafter described. Assuming that the metalhas been heated to the desired temperature for clamps upon theoscillating platform, the operator then draws either of the handles 38',38 outwardly in the direction indicated by the arrows in Fig. 5, wherebymotion is simultaneously communicated from said handles 38 to therespective pawls 39 and 40 through the bars 41, .41, pivots 42 and 43,levers 44 and 45, pivots 46 and 47, link 48, and elbow-crank levers 49and 50,

which elbow-crank levers are connected or formed integrally with saidpawls 39 and 40,

whereby said pawls are simultaneously thrown apart and. away from thehub 51, and thereby brought out from beneath the head, or angular bend52 of the clutch rod v 53. When the clutch-rod 53 is released, it

is instantaneously thrown toward the left (reference being bad to Fig.'4) and between the lateral projecting lugs 54 and 54 by the resilientaction of the spring 55, whereby the revoluble movement of the gearwheel 21 is communicated to the shaft 3, and from thence to therespective clamping members 10 through the eccentrics 11, collars 12,arms 13, pivotal bolts 14, and lugs 15, whereby said clamping membersare forced; against the metal to be formed and tempered and whereby suchmetal is rigidly retained in the required form until submerged by thedownward movement of the supporting platform and 'tempered; Motion isautomatically communicated from the continuously revolving gear wheel 21to the pivotally supported platform 1 as follows: It will be understoodthat the hub 22 is rigidly fixedto the shaft 3, and that, con-'sequently, when motion is communicated from said gear wheel 21 to saidhub 22, said shaft 3 will be revolved. It will now be understood thatwhen the hub 22 is being revolved by contact of the shoulder 54 or 54'with the clutch rod 53, the motion of the gear wheel 21 will becommunicated to the shaft 3 through said lug 54 and hub 22, and thatmotion will be simultaneously communicated from said shaft 3 to thecollar 60 upon the left hand side of Fig. 4, whereby the projecting arms61 will be caused to revolve with said shaft 3 and will be thereby brouht into contact with the roller 62, which is revolubly supported on thearm 63, whereby said roller and arm w1ll be thrown toward the right(reference'bemg had to Fig. 6) when motion will be communicated fromsaid arm 63 to the pawl-supportin and pivots 66, 66, whereby the pawls7Q, will be automatically thrown apart and away from the collar 71. Assoon as the pawls 70 have been thus separated and thrown away from thecollar 71, they will be brought out from beneath the head 71' 'of theclutch rod 72, when said clutch rod 72 will be thrown toward the rightby the recoil of the spiral spring 73, whereby the inner end of theclutch rod 72 will be brought within the circle described by the lateralprojecting lugs 74, whereby the revoluble movement of said lugs, whichare rigidly connected with the gear wheel 21 through the hub 21, will becommunicated through said clutch rod 72 to the hub 22 and from thencethrough the gear wheels 23 and 24 to the shaft 25, when, by therevoluble movement of said shaft 25, the eccentric 26 will be causedto'revolve between the bifurcated arms 27, whereby the respective endsof the platform 1 will be oscillated upwardly and downwardly with eachcomplete revolution of said shaft 25.

It will be understood that, in operating my machine, an operator ispreferably located at the respective ends of the oscillating platform 1,and that when the metal to be operated upon has been placed within theforming clamps, the operator at either end of said platform will drawupon one of the handles 38, whereby the metal will be clamped betweenthe forming blocks and forced into the desired sha e and thus retainedwithin the grip o the clamping mechanism; that, by a further movement ofthe operative mechanism, motion will be automatically communicated fromthe first clutch mechanism, manually operated by the handles 38', to theother clutch mechanism, as stated, through the revoluble movement of theshaft 3, whereby the elevated end of the oscillating platform 1 will becaused to descend into the oil or other tempering liquid, while theopposite end will be brought above the surface of such liquid. When thisis done, the clutch mechanism upon the left of Fig. 4 will beautomatically disengaged from operative connection with the shaft 3 aspreviously described, when the platform will be permitted to remain atrest until the metal which has been formed and tempered has been removedand replaced with other metal which has been heated to the desired arms64, 64 through the links..6 5, 65.

temperature.- When this is done, the-opera tor upon that side of theplatform last elevated will also'draw upon the next adlacent handle 38',whereby the clutch mech anism upon the right will be again thrown intooperative connection with the drivin gear 21, when the operationsdescribed W1 l be again and continuously repeated.

It will be understood that -the levers 44 and 45 are both pivotallysupported from a stationary member 75 of the machine, and that. the'levers. 64, 64 are also pivotallyfsit pported from a stationary member76 0 machine; also that with each half-revolution of the shaft 3, theheads of the respective clutch rods 53 and 72 are respectively drawntoward the right and left by contact with the angular surface of thepawls 39 and 40, as shown respectively upon the right and left in Fig.4; that as said heads, or angular bends are thus drawn over the angularsurface of said pawls, clutch rods are respectively drawn toward theright and left and out of engagement with the angular projections 54, 54and 74, whereby said angular projections are free to revolve with thegear wheel 21 without communicating any motion to the gear sup ortingshaft 3. The arms 49 and 50 o the clutch mechanism are connectedtogether by the spiral spring 77, while the arms 64, 64 of the otherclutch mechanism are connected together by the spiral spring 78, saidsprings being adapted, by their recoil, to draw the respective arms,with which they are connected, toward each other as soon as they arerespectively relieved, one from the action of the operator, and theother, from the action of the driving mechanism of the machine.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is 1. In a machine of the described class, thecombination of a liquid tank, an oscillating platform, means forpivotally supporting said platform in connection with said tank, aclamping mechanism supported on the respective ends of said platform, amotor, manually operated means for connecting said motor both with saidplatform and clamping mechanism, whereby the power of the motor may beutilized for both oscillating said platform and operating said clampingmechanism and whereby metal is retained in its required shape whilebeing tempered.

2. In a machine of the described class, the combination of a 1i uidtank, a pair of standards supported rom said tank, a platform pivotallysupported from said standards, a clamping mechanism supported, on therespective ends of said platform, a motor, a revoluble shaft, a gearwheel, loosely the opposite ends of said supported on said shaft, aclutch, rigidly 13o wmwwummvm was sha e, and automatic means, connectedwith sa-i revoluble shaft for actuating said pivotally sup ortedplatform after said metal has been 0 amped.

In testimony whereof I aflix my signature in the presence of twowitnesses. EDWARD J. HARVEY.

connected to said shaft, a manually operated rod connected with saidclutch, means connected with said rod for manually throwing said clutchinto locking en agement with a 8 said wheel, whereby the revo ublemovement of said wheel will be communicated to said clutch and shaft,means for communicating motion from said shaft, when revolved, toWitnesses: said clampm mechanlsm, whereby the heat- JAs. B. ERWIN, l0 edmetal wi be forced into the required 0. L. ERWIN.

Oepiee of this patent maybe obtained for live cents each, by addressingthe Commissioner 0! Patents.

Wuhiazten, n. e."

